Physical Properties of Crushed Stone Powder Influencing the Properties of Concrete
By T. Fumoto
Concrete Journal, Vol.51, No.6, Jun. 2013
- Synopsis
- Aggregate produced by crushing stone or waste always contains powder. When this powder is mixed in a part of the aggregate and for the effective resources, it influence the properties of the concrete. Given that there is a variety of powder materials and manufacturing methods, there is a need to clarify the physical properties of powder that affect the properties of concrete. With particular focus on crushed stone powder, this paper outlines the my research applied to paste, mortar and porous concrete. As a result, it is determined that the filling factor, particle shape, and fine surface irregularities of crushed stone powder have an influence on the dispersion state of crushed stone powder and the flowability of the paste, and that crushed stone powder behaves as a part of the paste with respect to the flowability and drying shrinkage of the paste.
- Keywords:
- crushed stone powder, specific surface area, filling factor, flowability, compaction, drying shrinkage, porous concrete
